Contrec's Field Mounted Rate Totaliser Model 202D requires no external power and is designed to operate with a 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 power 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 flowmeter mounting
- 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, minute, 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
Enclosure
Dimensions: 98mm x 151mm x 43mm
Protection: IP67 (Nema 4X) watertight
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 fully programmable high & low flow alarms or a pulse output & low alarm.
Pulse Output: Scaled or unscaled pulse output, 500Hz maximum. 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 producing 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 classified as "Simple Apparatus" as defined 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
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
