HCM4
Thermal Energy Calculating Meters 
For The 'Digital' Age
Technical Data 
           
                   
 
Technical   Details
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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)

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