440.238.2550   /   800.557.0064   /   sales@weschler.com
analog meters, digital meters, transducers, signal conditioners, data loggers and test instrumentation
Home | About Us | What's New | Industries | Weschler Products | All Products | Meter Mod Center | Reference | Contact | Site
Digital Panel Meters

 A brief overview of the various panel meter types and their capabilities.                                      Download in pdf format

Analog Panel Meter - Signal Indication
Typical size: 2½-5½" rectangular, 1½-4½" round, 3/16 & ¼ DIN, 6" edgewise, 4½ & 8¾” square switchboard.
Typical accuracy: 1-2% of reading DC, 2-3% AC.
Simple installation: No setup, no external power required.
No RF emissions and low EMI susceptibility.
Many special types & options: center zero, offset, RF, VU, high shock, illuminated, custom scaling, color dials.

Analog Panel Meter – Signal Indication – Weschler Instruments
Analog Meter Relay - Indication with Relay Contact Outputs
Typical size: 3½-4½" rectangular.
Typical accuracy: 2% of reading DC, 3% AC.
External power: 120/240VAC, 5-28VDC.
Setpoint relays: one high, one low, or dual (high and low).
Optical relay activates when signal passes setpoint.
Setpoint adjustment: knob or screw.
 Analog Meter Relay – Weschler Instruments

Digital Panel Meter (DPM) - Signal Indication
Typical size: 1x2" to 4x5", 1/32 to 1/8 DIN.
Typical accuracy: 0.1% of reading DC.
External power: 5-28VDC.

Display: LED (red, green or amber), LCD or backlit LCD.
Fixed function & range.
Typical resolution: 3-4½ digits for V/A, 6 digits for counter/timer.
Special types & options: loop powered, sealed front, custom range.

 Digital Panel Meter – Signal Indication – Weschler Instruments
Smart Digital Panel Meter - Advanced Indication, Control & Communication
Typical size: 1.5x3" to 8x16", 1/32 to 1/4 DIN.
Typical accuracy: 0.1% of reading DC, 0.5% of reading AC.
External power: 120/240VAC, 5/24/125/250VDC.
Display: LED (red, green or amber), LCD or backlit LCD.
Typical resolution: 3½-5 digits for V/A, 6-9 digits for counter/timer.
Some models have field selectable input type, sample rate, filtering, scaling, setpoints, curve fitting, etc.
Analog retransmit: DCV/mA output for remote indication or recording.
Relay outputs: Up to 6 setpoint relays for control & alarms.
Digital communication: RS232, RS485 or Ethernet for software setup & networking.Special types & options: dual input, loop powered, triple display, power meters, sealed front
 Smart Digital Panel Meter – Weschler Instruments
Digital Bargraph Meter - Digital Display & Analog Bar Indication with Control & Communication
Typical size: 6" edgewise, 4½ & 8¾” square switchboard; 9/64 DIN.
Typical accuracy: 0.1% of reading DC, 0.5% of reading AC.
External power: 120/240VAC, 5/24/48/125/250VDC.
Display: LED digits (red, green or amber) plus single or tri-color bar.
Typical resolution: 3½-5 digits and 50-100 segment bar.
Some models have field selectable sample rate, filtering, scaling, setpoints, curve fitting, bar color changes at setpoints, etc.
Bar & digital display can be scaled separately.
Analog retransmit: DCV/mA output for remote indication or recorder.
Relay outputs: Up to 6 setpoint relays for control & alarms.
Digital communication: RS232, RS485 or Ethernet for software setup & networking.
Special types & options: dual input, dual bar, high shock, sealed front
 Digital Bargraph Meter – Weschler Instruments
Controller - Digital Display & Setpoint Control
Typical size: 1/32 to 1/4 DIN.
Typical accuracy: 0.2% of reading DC, 0.5 C
External power: 120/240VAC, 24VDC.
Display: LED (red, green +/or amber), backlit LCD.
Typical resolution: 4 digits for process & setpoint displays.
Control modes: On/off, P/I, PID, batch, heating/cooling, etc.
Analog retransmit: DCV/mA output for remote indication or recording.
Relay outputs: One or two setpoint relays for control & alarms.
Digital communication: RS232, RS485 or Ethernet for software setup & networking.
Special types & options: reverse acting, pulse output, autotune,

 Process Controller – Weschler Instruments

Transducer/ Sensor & Meter
Sensors & Transducers – Weschler InstrumentsUse a transducer or sensor to convert a signal so it can be read by an analog or digital meter.

Examples:
Current Transformer (CT)    hi current AC ⇒ 1A or 5A AC
Potential Transformer (PT)   hi voltage AC ⇒ 120V AC
DC Shunt                            hi current DC ⇒ 50 or 100mV DC
Current Transducer            AC or DC A ⇒ DCV or mA
Frequency Transducer        Hz ⇒ DCV or mA
Watt Transducer                 AC V&A ⇒ DCV or mA
Pressure Sensor                psi ⇒ DCV or mA

 Bargraph Meters – Weschler Instruments  Power & Energy Meters – Weschler Instruments
 DC Shunt & Panel Meter – Weschler Instruments  Wattmeter – Weschler Instruments