Model 271C

Model 271 TWO-CHANNEL Conductivity Analyser
Water Purification Equipment Monitor

  • "Two Instruments in one" makes excellent choice for OEMs
  • Dual channel conductivity measurement (e.g. Feed and product water) (Optional Single Channel)
  • Choice of cell constant
  • Auto temperature compensation to 25°C, range 0-125°C
  • 0.01 μS/cm resolution for 0-20 μS/cm
  • Ranges: 0-20, 0-200 and 0-2000 μS/cm
  • Continuous 0-5 VDC/0-1 mA outputs for both channels for alarm, control or record
  • Non interacting isolated 4 - 20 mA output, range expandable to 10% of scale
  • Frequency output 200Hz to 2Khz
  • Two programmable relays operate on increasing or decreasing conductivity, switch selectable. One relay for each channel
  • 3 1/2 digit, 0.75" high visibility LCD
  • Front panel identification for selected channel and relays
  • NEMA 4X (IP 65) enclosure (panel cut out 1/2 DIN)
  • Universal mounting
  • Economical - ideal for custom system designs (OEM)

Operational:

Display
Digital: 3 1/2 digit, 0.75" LCD
Ambient Conditions
-30 to 50°C (-22 to 122°F), 0-100% R.H. non-condensing
Relays1
1 (1 & 2) For ON/OFF control. One for channel
Control set point Continuously adjustable, 0-100% of full scale
Control Dead Band Fix (Optional adjustable, 0-15% of full scale)
Indicators LED lights when respective relay turns on
Contact Rating SPST, 5A, 115/250 VAC, 5A 30 VDC resistive Potential free
Power Requirements
98-132 VAC, 50/60 Hz (less than 5 VA), optional 195-265 VAC, 50/60 Hz, connections via terminal strip
Analog outputs standards:
a) For each channel, Non expandable and non-isolated
Minimum Load
0-1 mA, 100 ohms maximum load OR 0-5 VDC, 500K ohms
Sensors to Analyzer Distance
300 ft. maximum
Notes:
1 Control relay turns on in response to increasing reading (standard version). Option: CONTROL MODE Switch Selectable.
2. Range Expand - The 4-20 mA output can be made to represent a selected segment of the display scale. This segment can not be smaller than 10% of the scale span, but may be positioned anywhere within that span.
3. Either 4-20mA analog output OR frequency output is available.
Performance (Electrical, 4-20 mA Outputs)
Sensitivity
0.1% of full scale
Stability
0.1% of full scale per 24 hrs., non-cumulative
Repeatability
0.1% of span
Non-Linearity
0.5% of span
Temperature Drift
Zero: 0.02% of span/C, Span: 0.02% of span/C
Response Time
3 seconds to 99%
Mechanical:
Enclosure
NEMA 4X, polycarbonate, with two 1/2" conduit holes and stainless steel mounting brackets. Surface, panel and optional pipe mount
Net Weight
1.36 Kgs. approx.

Ordering Information

Please choose one from each category to build your product number.
MODEL NUMBER 271C Analyzer in NEMA 4X, ½ DIN, PVC or Polycarbonate enclosure with SS mounting bracket.
With cell constants: 0.05 for upto 0-200 μS/cm, 0.5 for upto 0-2000 μS/cm
CHANNEL SELECTION 1 Single Channel
2 Dual Channel
CHANNEL A RANGE SELECTION A1 0-20 μS/cm
A2 0-200 μS/cm
A3 0-2000 μS/cm
AK Special
CHANNEL B RANGE SELECTION B1 0-20 μS/cm
B2 0-200 μS/cm
B3 0-2000 μS/cm
BK Special
LINE VOLTAGE 1 115 volts, 50/60 Hz
2 230 volts, 50/60 Hz
ANALOG OUTPUT I0 Without 4 – 20mA output
I1 With 4 – 20mA output (Non interacting Isolated)
Frequency output (Isolated) F1 200Hz to 2KHz
RELAYS R0 Without Relays
R1 With Relays
N Standard Instrument
K Special Instrument

Enclosure Dimensions & Mounting (Inches (mm)):

Model 271C dimensions