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202D Field Mounted Rate Totaliser by Contrec

Contrec 202D Field Mounted Rate Totaliser

Contrec's Field Mounted Rate Totaliser Model 202D requires no external power and is designed to operate with turbine, positive displacement and paddle wheel flowmeters in applications such as irrigation systems and pipelines, and as a replacement for mechanical registers.

Battery, Loop or DC powered

The standard 202D is powered by long-life lithium batteries. Alternatively, the 202D can be loop powered via an optional 4-20mA output, or powered from a 9-28 Volts DC supply. For installation in hazardous areas a certified intrinsically safe version is available. The intrinsic safety approvals cover both the 4-20mA output and relay outputs, in addition to the input circuits.

Watertight field mounting enclosure

The 202D Rate Totaliser is housed in a rugged yet attractive IP67 (Nema 4X) rated polycarbonate enclosure which is completely watertight. This enables the instrument to be mounted directly on the flowmeter, panel mounted or wall mounted using a special universal bracket. A 2″ pipe mounting bracket is also available.

Fully user programmable 

K-factor, decimal point positions, filter constants and time base are fully user programmable. Rate and Totals can also be displayed in different engineering units such as gallons per minute and barrels.

202D Field Mounted Rate Totaliser Features at a glance

  • ATEX, CSAUS/C approved
  • Displays Rate, Total and Accumulated Total
  • Battery, Loop or DC powered
  • Intrinsically safe version – 202Di
  • Watertight to IP67 (Nema 4X)
  • Wall, pipe, panel or flowmetermounting
  • Fully programmable
  • 4-20mA output
  • High & low alarms
  • CE compliant


202D Display Information

Type: LCD display
Total: 7 digit 10mm high LCD (continuously powered)
Rate: 4 digit 8.5mm high LCD (continuously powered)
K-factor Range: The pulses per unit of measure (eg: pulses/gallon) is programmable in the range 0.000001 to 999,999
Decimal Points: Fully programmable for Rate and Total
Time Base: Rates can be displayed in units per second, minutre, hour or day
Frequency Range: 0.01Hz to 10kHz
Signal Type: Switch settable for sine save (15mV P-P minimum), open collector, reed switch or pulse

Interface: CE Compliance


202D Rate Totaliser Physical Information

Operating Temperature: -20 to + 60°c
Dimensions: 98mm x 151mm x 43mm
Protection: IP67 (Nema 4X) water tight
Cable Entry: by cable glands

Materials: Polycarbonate and ABS


202D Power Options

Battery Powered Version
Battery Type: 2 x Lithium battery packs
Battery Life: 5 years
Loop Powered 4-20mA Output Version
Scale: The 4mH and 20mA points are programmable
Resolution & Linearity: 0.05% of span
Accuracy: 0.05% of span at 25°c
Update Time: 0.5s
Connection: 2 - wire
Voltage Across Output: 28Vdc maximum
Voltage Drop: 9V maximum
Memory Backup: Lithium battery
DC Powered / Alarm or Pulse Output Version
Outputs: 2 x solid state relay outputs suitable for driving DC solenoids or external relays. The outputs provide fylly programmable high & low flow alarms or a pulse output & low alarm. 
Pulse Output: Scaled or unscaled pulse output, 500Hz manimum. Pulse width depends on output frequency and varies from 100mSec to 1mSec
Accuracy: 0.05% of span at 25°c
Switching Power: 200mA, 30Vdc maximum
Saturation Voltage: 0.8Vdc across outputs when in the "on" state
DC Power Input: 9-29V @ 4mA maximum
Memory Backup: Lithium batt


202D Rate Totaliser Hazardous Area Information

Type of Approval
  • ATEX: Rating - II 2G Ex ia IIB T4 Gb  /  Cert No. BVS 15 ATEX E 106 X
  • IECEx: Rating - Ex ia IIB T4 Gb  /  Cert No. IECEx BVS 15.0099X
  • CSA US/C - Rating - Class 1, Group C & D  /  Cert No. 104840-5

Intrinsically Safe Parameters

Maximum Ambient: 60°c
Maximum Input Parameters: 
(for certified IS coil or other certified IS sensors with produce a pulse output)
U0 = 10.0V         L(ext) = 1.5H      Ii = 20mA
I0 = 9.0mA          Li = 0mH            Pi = 320mW
C(ext) = 60uF     Ui = 24V             Ci = 0.002hF
Note: Devices such as reed switches, which can be classes as "Simple Apparatus" as definced in the Cenelec standard EN50020, can be connected to the Model 202D without additional certification
Maximum Output Parameters:
4-20mA or Relays: Ui - 28V  /  Ii = 93mA  /  Pi = 656mW


202D Dimensions

Contrec's 202D Rate Totaliser Dimenstions 


202D Rate Totaliser by Contrec Document Download

DOWNLOAD PDF  for the *202D Field Mounted Rate Totaliser by Contrec


DOWNLOAD PDF  for the 202D Field Mounted Rate Totaliser by Contrec