ES-3225 Rev.6
PM2W
Plug-in Signal Conditioners M-UNIT
2-WIRE POTENTIOMETER TRANSMITTER
(molded)
Functions & Features
• Providing a 4 – 20 mA DC signal proportional to a potentiometer or slidewire position input
• Constant voltage excitation allows use with pots with total resistances from 100 Ω – 2 kΩ without affecting accuracy
• Small, molded unit is suitable for being incorporated into another device
Typical Applications
• Tank levels
• Positions
MODEL: PM2W
ORDERING INFORMATION
• Code number: PM2W
RELATED PRODUCTS
• Current loop supply (model: YVD)
• Mounting Frame (model: PM2W-FR)
GENERAL SPECIFICATIONS
Construction
: Molded
Connection
: M3 screw terminals (torque 0.5 N·m)
Screw terminal
: Nickel-plated brass
Housing material
: Flame-resistant resin (black)
Zero adjustment
: 0 to 10 % of total resistance
Span adjustment
: (of total resistance)
135 Ω or above: 50 – 100 %
Below 135 Ω: 70 – 100 %
INPUT SPECIFICATIONS
Potentiometer
: 100 Ω – 2 kΩ
Minimum span
: 50 % of total resistance (≥ 135 Ω); 70 % of total resistance (< 135 Ω)
Excitation
: 0.2 V DC
OUTPUT SPECIFICATIONS
Output range:
4 – 20 mA DC
Load resistance vs. supply voltage:
Load Resistance (Ω) = (Supply Voltage (V) – 9 (V)) ÷ 0.02 (A)
(including leadwire resistance)
INSTALLATION
Supply voltage
: 9 – 28 V DC
Operating temperature
: -5 to +60°C (23 to 140°F)
Operating humidity
: 30 to 90 %RH (non-condensing)
Mounting
: Surface with the Mounting Frame (model: PM2W-FR)
Weight
: 90 g (0.2 lb)
PERFORMANCE in percentage of span
Accuracy
: ±0.2 %
Temp. coefficient
: ±0.015 %/°C (±0.008 %/°F)
Response time
: ≤ 0.1 sec. (0 – 90 %)
Dielectric strength
: 2000 V AC @1 minute (input or output to ground)
EXTERNAL DIMENSIONS & TERMINAL ASSIGNMENTS unit: mm [inch]
MOUNTING REQUIREMENTS unit: mm [inch]
SCHEMATIC CIRCUITRY & CONNECTION DIAGRAM