Hanna Instruments Panel Mounted Conductivity Controller

Extremely accurate and simple to install, Hanna's mid-range controllers offer economical, constant monitoring of pH, Oxidation Reduction Potential (ORP), Electrical Conductivity (EC), and Dissolved Oxygen. The compact, easy-to-use controllers are designed to consistently perform in most environments and conditions twenty-four/seven.
Panel mounted conductivity controller 0.0-199.9 mS/cm
An analogue controller can be configured by you to your exact process requirements.
There is no need to worry about space or cost, as all the controllers can be installed in confined spaces and the low cost means previously manual monitoring can now be automated, saving time and money.
A simple panel mounted conductivity controller designed for easy operation. The HI-8931 range should be used with the HI-8936 transmitter series. Using the correct transmitter will ensure a strong, interference-free signal at a distance of up to 300 metres (1000 feet).
The output configuration for connecting a recorder or a PLC can be chosen between 0-20 or 4-20 mA.
Use a HI-7135 electrode for in-line applications or the HI-7638 with external threads for tanks. The electrodes contain a built-in NTC sensor for temperature compensated conductivity measurements.
The controllers have large, easy-to-read displays, fire-retardant casing, electrode input, automatic alarm features, recorder output, plus dosing consent feature on ORP and pH models.
The front panel is protected behind a transparent splash-proof cover.
Order Information:
The HI-8931 series is supplied with mounting brackets and instructions.
EC Range
HI-8931AN: 0.0 to 199.9 mS/cm
HI-8931BN: 0.00 to 19.99 mS/cm HI-8931CN: 0 to 1999 µS/cm HI-8931DN: 0.0 to 199.9 µS/cm
EC Resolution
HI-8931AN: 0.1 mS/cm
HI-8931BN: 0.01 mS/cm
HI-8931CN: 1 µS/cm
HI-8931DN: 0.1 µS/cm
EC Accuracy
±2% F.S. (excluding probe error)
EC Calibration
manual, two point, through offset and slope trimmers
EC/TDS Temperature Compensation
automatic, 0 to 60°C with β=2%/°C; see also transmitter HI-8936
Input ChannelsDIN (probe) or 4-20 mA (transmitter)
EC/TDS Probe
HI-7635 for in-line applications or HI-3001D for flow-thru (not included)
Alarm Relay Range
HI-8931AN: 0.0 mS and 100.0 mS
HI-8931BN: 0.00 mS and 10.00 mS
HI-8931CN: 0 µS and 1000 µS
HI-8931DN: 0.0 µS and 100.0 µS
Dosing Control
OFF/AUTO/ON with selection switch
Over Dosing Control
adjustable, from 5 min to 60 min at front or disable by wire strap - on rear panel
Digital Input Signal
HI-8931AN: HI-8936A / A
HI-8931BN: HI-8936B / BL
HI-8931CN: HI-8936C / CL
HI-8931DN: HI-8936D / DL
Backlight
continuous on
Enclosure
flame retardant ABS body and front panel; transparent splash-proof front cover
Panel cut out
141 x 69 mm (5.6 x 2.7")
Recorder Output
0 to 20 mA or 4 to 20 mA (isolated)
Set Point
1, Isolated, 2A, max. 240V, resistive load, 1,000,000 strokes; range: 0.0 to 199.9 mS/cm; 0.00 to 19.99 mS/cm; 0 to 1999 µS/cm; 0.0 to 199.9 µS/cm
Power Supply
230 VAC ±10%; 50/60 Hz
Environment
-10 to 50°C (14 to 122°F); RH max 95% non-condensing
Weight
1 kg (2.2 lbs.)
Ordering Information
The HI-8931 series is supplied with mounting brackets and instructions.