·Some details are not shown. Please refer to specification sheets for all information.

27PM

Head-mounted Two-wire Signal Conditioners
27-UNIT

POTENTIOMETER TRANSMITTER
(PC programmable)

Functions & Features
• I/O range programming via PC Configurator
• Self diagnostics
• Low temperature drift

MODEL: 27PM–0[1]

ORDERING INFORMATION
• Code number: 27PM-0[1]
Specify a code from below for [1].
(e.g. 27PM-0/M)

SAFETY APPROVAL
0: None

[1] OPTIONS
Function Monitor LED
Blank: Without
/M: With

RELATED PRODUCTS
• USB interface Bell202 modem (model: COP-HU)
Usable in ‘non-hazardous’ area only.
• PC configurator software (model: 27MCFG)
Downloadable at M-System’s web site.

GENERAL SPECIFICATIONS
Construction: Sensor head-mounting
Connection: M3 screw terminals (torque 0.5 N·m)
Screw terminal: Nickel-plated brass
Housing material: Flame-resistant resin (black)
Isolation: Input to output
Function monitor LED: Input status and error status are displayed by blinking mode.
User-configurable items: PC and the transmitter are connected with the COP-HU.
· Input range
· Burnout
· Output limits (Upper / Lower)
· Damping time
· Linearization
· Output calibration
· Loop test output

INPUT SPECIFICATIONS
■ Potentiometer: 100 Ω – 10 kΩ
Minimum span: 10 % of total resistance
Excitation: 2.5 V DC (43.2 kΩ connected in serial)

OUTPUT SPECIFICATIONS
Output range: 4 – 20 mA DC
Operational range: 3.75 – 23 mA
Load resistance vs. supply voltage:
Load Resistance (Ω) = (Supply Voltage (V) – 9 (V)) ÷ 0.023 (A)   (including leadwire resistance)
Burnout: 3.75 – 3.8 mA or 21.5 – 23 mA
(factory set to 23 mA)
Upper output limit proportional to the input:
20 – 21.5 mA (factory set to 21.5 mA)
Lower output limit proportional to the input:
3.8 – 4 mA (factory set to 3.8 mA)
Update time: 440 msec.

INSTALLATION
Supply voltage
DC: 9 – 35 V DC
Operating temperature: -40 to +85°C (-40 to +185°F)
Operating humidity: 0 to 95 %RH (non-condensing)
Mounting: Head-mounting (DIN type B head)
Weight: 50 g (1.76 oz)

PERFORMANCE in percentage of span
Accuracy: 0.05 % × 100 % of full scale / Input range (%)
Temp. coefficient: 0.0075 %/°C (0.004 %/°F)
Response time: ≤ 2 sec. (0 – 90 %)
with damping time set to 0
Burnout response time: ≤ 2 sec.
Supply voltage effect: ±0.01 % of span/V
Insulation resistance: ≥ 100 MΩ with 500 V DC
Dielectric strength: 1500 V AC @1 minute (input to output)

STANDARDS & APPROVALS
EU conformity:
EMC Directive 
  EMI EN 61000-6-4
  EMS EN 61000-6-2
RoHS Directive
  EN 50581

FUNCTION MONITOR LED (option /M)

EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm (inch)

MOUNTING REQUIREMENTS unit: mm (inch)

SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM

M-System Co., Ltd.