Case -- Heavy Duty Nylon Case with perspex front viewing panel, two programming buttons located on the front panel
Case Size -- 124mm wide 170 mm high 95 mm deep Case Drawing
Mounting -- Wall mounted 
Case Weight  0.9kg
Voltages – 230 volts (standard) 110 volts (export only) 24 volts 
LCD Display -- 16 Characters including spaces 
Display Visual Size -- 65mm wide 13 mm high with dots per character 5 x 7
Environmental Class -- Confirms to the operational requirements of both Class B 
(Domestic Outdoor Installations) and Class C (Industrial Installations) 
Temperature Operating Range  0c to 90c 
Accuracy Class -- Complete Unit = Calculating Module & DHAS = Accuracy Class 1
Conforms to Measuring Instruments Directive (MID 2004) and ISOEN1434
Temperature Sensors – DHAS – Digital High Accuracy Sensors 
Long Distance Sensors ( LD Version) – Perfect data accuracy transferable up to 200metres 
cable lengths manufactured in5,10,20, 50,100,200 metres  LD Sensors 
Sensor Mounting/Fixing –Strap on sensors (standard) - brass pockets into pipe work optional DHAS Sensors
Sensor Accuracy --  Conforms to within the ISOEN 1434 Parts 1 to 6 -  Class 1 requirements 
(Standard Version)
Low Flow Error Compensation – Software compensation to greatly improve accuracy at low flows
Power Consumption – Idle 0.03amps    Operational 0.1amp
CE Conformity -- Conforms to Low Voltage Directive 73/23/EEC
Conformity – Conforms to both RoHS & WEEE directives
Pulse Output - Open collector --with grab circuit – band width 200ms – 10 pulses per KWh/MWh Pulse Data
Wiring -- 21 way (max)  Terminal block on PCB -- Removal of case cover is required -- 
sealable terminals on completion of wiring Wiring Diagram
Operational Error Codes 
ERROR 1     No sensors connected or shorted to 5volts
ERROR 2     Data shorted to O volts 
ERROR 3     Data transmission error 
ERROR 4     Only 1 sensor connected
ERROR 5     Not a pair (either 2 hot or two cold connected)
4 - 20 mA Outputs -- Control signal with 2 test points at 4 mA  & 20 mA -- 4 - 20 mA
Programmable for either Active(standard)or passive signals
(0 to 10mA available as an alternative) 
Total no of graduations    800 = Value of each graduation    20 micro amps    Supply Voltage   15 volts     
Maximum Voltage 30 volts. High Refresh Rate 1 Sec

Product List 
HCM4000 - Pulsed Output - Standard Product 
HCM4001 - 2 Pulsed Outputs 
HCM4002 - 2 Pulsed Inputs + 2 Pulsed Outputs 
HCM4003 - Pulsed Output + Variable Flow Input 
HCM4004 - Pulsed Output + Analog 4 -20mAmp signal 
HCM4005 - Pulsed Output + VAV
HCM4006 - Pulsed Output + Mbus 
HCM4007 - Pulsed Output + RS485
HCM4008 - Pulsed Output + Modbus
HCM4009 - Pulsed Output - Heat Pumps
HCM4010 - Prepayment APM 
HCMTOM - Thermal Oil Meter

Application Suitablity -- Billing - Energy Monitoring -- RHI ( Renewable Heat Incentive)