These waterproof (IP67) and pocket size testers (153 mm long, 24 mm diameter, weight just 45 g) with digital display are ideal for aquaria or aquaculture and any other field applications. There are different models with replaceable electrode and automatic temperature compensation available that read conductivity or salinity (0-1999 µS EC or 0,0-199,9 ppm TDS), pH-value and temperature (0.00-14.00 pH and 0.0-50.0 ºC) or redox potential (± 1000 mV ORP) at an affordable price. The tester are factory calibrated, but can be manually calibrated and measurements are highly accurate (0.1 or 2 % or mV) with high resolution (1,00 to 0,01). The modular design allows easy electrode and battery replacement. A rugged splash-proof and floating casing prevents water infiltration. All the testers work with common batteries (3 x 1.5 V).

TEST BOX for the water analysis

This Compact-Laboratory box set is equipped with liquid color analysis tests of: Ammonia, Nitrite, Nitrate, Phosphate, Total-Hardness and pH-value. Optionally it is available with a photometer for additional analysis of: Iron, Copper, Chlorine, Chloride, Silica, Alkalinity und Carbonate-Hardness.

All tests are also available as single or replacement units and additionally test sets for: Aluminum, Arsenic, Lead, Cyanide, Manganese, Nickel, Sulfate, Sulfite, Zink, Zinn etc.

For the necessary manual analysis, this microprocessor photolyser meter with professional concept and high precision is the right choice. Just select the required program on the foil pushbuttons. The display shows the parameter and dimensions exactly (to 2 digits behind the got). An acoustic sign informs when the reaction time is finished. The results are displayed on the meter and can be stored for later processing. The meter is equipped with a  RS-485 adaptor. Via an additionally integrated RS-232 adaptor the meter can be connected to a printer or PC (cable as accessories available). It is possible to archive over 500 stored data sets with date and time for up to 16 tanks. The meter has a 0-point-memory, which needs no new calibration. This photolyser works with 4 usual 1,5 V batteries, with integrated capacity monitoring on the meter. Alternatively accumulators or an connector for external power supply is available (as accessories).

Reagenzia/Measurement:
Aluminum 0-0,5 mg/l, Ammonia 0-0,5 mg/l, Bromine 0-10 mg/l, Chlorine 0-5 mg/l, Chloride 0-250 mg/l; Copper 0-1 mg/l, Hardness 0-500 mg/l; Iron 0-5 mg/l, Ozone 0-1 mg/l, pH-value 6-8 and Acid-potential 0-5 mmol, etc.

ECONOMIC METERS for simple measurements

At the development of this new series of handheld meters we concentrated on the most important functions of the measurement technique. The pure measurement with the focus on precision, fastness and durability packed in a stable ABS-housing 108 x 54 x 28 mm (LxWxD), weight approx. 130-200 g (without sensor) with 4 simple touch-buttons, allows for an extraordinary relationship of price to value. This functional meters have a modern and ergonomic design, are dust- and weatherproof (according to IP65/67) and have an illuminated 3-line display (accuracy: 0,5-1,5 % resp. +/- 1 digit at a norm temperature of 25 °C) with battery status. This reasonable priced meters are delivered completely ready to use incl. battery (type AA), cable and sensor (12 mm Ø). Transport cases are available as accessories.

ELECTRONIC METERS for many water parameters

All this electronic GMH devices have a size of 142 x 71 x 26 mm (LxWxD) and a weight of approx. 155/255/300 g (incl. battery/sensor), and have a LCD double display for measured values and temperature, min-/max-value memory, configurable automatic switch-off function (1-120 min), hold-function, foil pushbuttons, automatic temperature compensation, 12-15 mm Ø sensors (precision +/- 1 digit), serial connection, 9 V  battery with warning and external energy connector. Transport boxes are available as accessories. The meters GMH-34 to GMH-36 are also available as waterproof versions with or without alarm and logger function. Multiparameter-Meters (for PH-value/Redox, Conductivity/Salinity, Oxygen/Temperature in one device), on request.

DATA COLLECTING SYSTEM for GHM meters

In connection with a PC, a meter of the GMH-series, the PC-interface adaptor (accessories) and this software, a comfortable and reasonable data collecting system can be build (registration of data also over many years possible).

Water Analyzer Brochure

This new electronic measuring device with a waterproof (IP67) and impact-resistant ABS housing (L x W x H) 160 x 86 x 37 mm (including protective case) and a weight of approximately 300 g (including batteries) features an integrated stand/hanging bracket, a daylight-readable, backlit LCD multi-display (180 x 128 pixels and membrane keypad), a data logger with integrated memory (8 GB with FAT file system), visual and audible alarms, manual salinity correction, and automatic pressure and temperature compensation (reference temperature 20 or 25 °C). It also has connectors for two sensors (excluding probes, 12-16 mm Ø) and three NiMH AAA batteries (max. 750 mAh). This allows two sensors (and up to four sensors when changing sensors) to be connected to a modern measuring device for oxygen measurement simultaneously. (0-50 mg and 0-500%) and partial pressure (0-1013 mbar), or conductivity (0-500 mS/cm) and salinity (0-70 g/kg), and temperature (0-100 °C), as well as pH value (0-14) or redox potential (-/+ 1500 mV). Charging the replaceable batteries and reading the large memory is done via a standard 2.0 micro USB port (cable not included). Various application solutions and a carrying case are available as accessories (or already included in the complete sets).

Water Analyzer Brochure

Meter with sensors for ion-measurements (Ammonium, Nitrate, Calcium, Sodium, Chloride, Bromine, Iodide, Fluoride, Sulfur, Cyanide, Cadmium, Potassium, Copper, Silver, etc.), on request!

These new and professional handheld meters have been developed with a wide range of functions, high robustness, and ease of use for safe and reliable water analysis. The robust housing (ABS, TEP, PES) measuring 170 x 78 x 38 mm (weight with batteries approx. 350-400 g, without sensors) and the protection (IP67 for the device, IP68 for the sensors) against water, dust, and impacts make them a perfect choice for field use. The integrated stand (with magnet) is useful for laboratory applications. They feature a large, backlit LCD display (140 x 160 dot matrix, visible area 42 x 50 mm), automatic temperature compensation, data logging, and a USB-C rechargeable battery system (4xAA batteries included). The automatic storage system (with manual start/stop allows recording at intervals of 1-30 seconds/minutes) to store up to 1 million data records (file system-based) in CSV-files (each data record contains a timestamp and measurement value). The data logging, and USB-C rechargeable battery system (4 AA batteries included) are key features. The automatic data storage system (with annual start/stop, allowing recording at intervals of 1-30 seconds/minutes) can save up to 1 million data records (file system-based) in CSV files (each record includes a timestamp and measurement value). The multilingual, configurable (German, English, Italian, French, Spanish) user interface guarantees for easy programming (e.g., audible/visual alarm, and date/time with RTC function, maximum deviation 1 minute/month at 25°C). Operating conditions: -5 to +50°C; 0 to 95% RH (non-condensing), storage conditions: -25 to +65°C (without batteries). Current consumption is typically 12-18 mA, and battery life is approximately 150-200 hours (backlight off), but this also depends on the number and type of connected sensors. Automatic shutdown is user-configurable (and is disabled when an external power supply is connected). These meters can be equipped with various sensors (pH-value or redox-potential, conductivity and temperature); the multimeter can even accommodate up to three sensors, one of which is a low-maintenance and long-lasting optical oxygen sensor.

This improved meters were specially adapted for use in aquaculture and limnology. The compact (L x W x H 165 x 83 x 34 mm, approx. 305 g) splash-proof cover (IP 54), the plastic sensor (14 mm Ø, 150 mm long, with 1.5 m cable), the very long sensor life (approx. 2 years standby time), and the delivery with NiMH-batteries (2 x AA Mignon) and USB-cable with charger in transport case, make these meters perfect for field work or laboratory use. The large graphic multi-display makes the readings available clearly and quickly. The short polarization time (approx. 30 sec. max. 5 min.), the low flow current sensitivity (1 % at 5 cm/sec.), the high precision +/-1 digit (0.1 mg, 0.5 % or °C), as well as salinity correction, automatic air-pressure and temperature compensation (in the range of 5-40 °C) makes working easy. Automatic calibration with the calibration chamber (included) is an additional feature. Options include stainless steel sensors (4.7-5.4 mm), and other cable lengths available. To enable you assigning measured values geographically, these meters are available with or without GPS.
This modern devices have: an electronic compass, a data logger with adjustable start/stop time and measuring intervals between 5 sec. and 10 min., with automatic storage of all measured values ​​(approx. 3 months during battery operation, also mains operation possible), a large internal memory (32000 locations), and an individual measured value storage on key press with 1000 memory locations. Additionally, radio controlled (RC) switching outputs for standard RC sockets and acoustic signals, for up to 4 RC sockets with separate two-point control for oxygen (absolute or relative), conductivity, temperature or air pressure, two additional alarm outputs, which trigger a standard RC bell when the set values ​​are exceeded or subtracted, and two additional channels for optical and/or acoustic alarm on the meter. The power-saving graphics display (transflective with background lighting) with best readability even in direct sunlight, and adjustable contrast, activates automatically display and background lighting when the device is moved (can be switched off). The beep (alarm and key tone) volume and frequency is adjustable. PC-software for data visualization and data export available optionally (with free online software update).

MOBILE MULTIMETER for many sensors

This new, portable, multi-parameter handheld meter can simultaneously connect and manage up to 30 digital sensor modules in any combination via the digital sensor-bus (5-pin M12 connector) and Y-cable (multi-sensor adapter available as accessory). Measurement modules with sensors for optical oxygen, pH-value, redox-potential, conductivity and temperature are available. Additional modules, such as carbon-dioxide, turbidity, or chlorine, are under development and can be connected via the sensor-bus at a later date, after a software update. The integrated air-pressure sensor provides automatic air-pressure compensation for oxygen measurements (automatic temperature compensation is achieved via the conductivity sensor). The system automatically detects which sensors are connected and adjusts the user interface accordingly. The modern, ergonomic design of the housing (130 x 75 x 30 mm) made of black ABS with TPE impact protection (blue), a color touchscreen, and three buttons on the front glass make operation very easy. Thanks to its protection rating (device IP65, connector IP67) and protection class III, this robust system is ideally suited for use in harsh environments (transport case optional). Measurement data (up to 10,000 including time-stamps) can be stored at freely configurable intervals and then transferred directly to a PC, tablet, or smartphone via USB (8-pin M12 connector, USB data cable available as an accessory) or Bluetooth (optional) for further processing with common spreadsheet programs (e.g., MS Excel). The included high-capacity 1200 mAh lithium-ion battery with temperature monitoring guarantees extended, independent operation (operating time depends on the type and number of sensors and the energy-saving mode settings). The system can also operate continuously when powered by the included 3-pin M8 power supply.

Water Analyzer Brochure

OPTICAL OXYGEN SENSOR for systems

This newly development is the first optical dissolved oxygen sensor with SCS interface (Simulation Clark-Sensor), for a perfect integration into running systems. The ideal substitute for your existing oxygen sensors. Via the SCS interface downward compatible to classic oxygen sensors (galvanic isolation), works together with classic transmitters. Additionally, the sensor can be connected via the 4 to 20 mA current output or with a process control system (SPS). As accessories, a PC-adapter (USB-RS485) is available, with which the sensor can be connected directly to a personal computer, and configures from there (Software for free), where just a net-device is needed and no external meter. The calibration is simple and only needed once as the calibration data can be stored in the sensor. The robust and simply exchangeable sensor cap has a warranty of 2 years. It guarantees stable values at once, little drift, quick reaction time, and all independent from incoming flow. The sensor has no no sensitivity towards H2S or CO2, but an automatic temperature compensation and malfunction diagnosis. Measurement range 0-20 mg/l, 0-200 % sat., resolution (at 25 °C) +/- 1 %, limit 0.1 %, reaction time < 60 s, temperature range -5 to +50 °C. The sensor can be delivered with an IP68 termination plug or with a fixed cable in different lengths. For fish farming there is a robust version with a bitting-protection with nut insert available for water depth up to 50 m.

MODULAR MULTIPARAMETER measurement and control system

When it comes to automatically controlling and adjusting critical water parameters, it leaves nothing to be desired. Due to its flexible modular concept, the system is the perfect solution for most applications in aquatic environments. Apart from comprehensive timing functions, it provides measuring modules for the parameters of pH value, redox potential, temperature, conductivity, level (fill level), oxygen and air pressure. Up to eight sensors can be linked to the system in any requested combination. This allows, for instance, simultaneous pH value-measurement and adjustment in eight different pools – which is so far unique. Connection facilities for up to eight measuring modules in any requested combination allows for connecting up to 16 switching outputs (4x4) for control and adjustment functions measured data storage for 2000 measuring chains battery packed computer interface for PC-data evaluation with the software, capable of being network-integrated by LAN adapter, flash memory technology for update-function, automatic sensor identification and sensor testing, day/night simulation, lunar phase simulation, high/low tide simulation, flow simulation, timer clock functions, time interval functions, night modus, acoustic, optical and external alarm, etc.
The system provides greatest accuracy, ease of use, and maximum reliability. The systems are available as measuring/regulation systems with a switch socket and mains adapter for permanent operation. Besides its accomplished design, its practical special functions are thoroughly convincing, too. It is this facility that gives you the overall picture of your past readings thus quickly revealing any trends. The systems can be extended, even at a later date, to form a measuring and regulation system designed for permanent operation, simply by connecting the optionally available power station. An integrated alarm function assures greater safety. You can select an upper as well as a lower alarm setting. If, for whatever reason, one of these alarm settings is reached, the Power Station switch socket will be turned off. At the same time the alarm status will be appear on the display. The result is a reliable and effective prevention of damage. Microprocessor-controlled, Alarm function, Large display panel, Manual / automatic storage of measurements (up to 470 readings), Automatic transition to energy-saving mode when being run on batteries, Battery check, Semi-automatic calibration with sensor test (for pH, redox, conductivity, oxygen), High-quality, low-maintenance sensors.
The software is the central and convenient solution for controlling, adjusting and analyzing all industrial measurement and control systems. At just one glance, the user can check out if everything is okay – and interfere if necessary. Internet connection allows for controlling and adjusting the system even from remote PCs. It allows for analyzing and controlling the data measured by up to 255 industrial systems in one central PC. Allows for configuring all system parameters from PC, allows for status e-mails and SMS alarms, data base and graphical presentation of measured data and measured value evaluation.

Water Analyzer Brochure