Digital Panel Meter

A digital panel meter is an instrument mounted on a panel that takes a process signal from a field transmitter. It converts this signal into a numeric value using engineering units and shows it on a digital display. The Sertel digital panel meter takes a 4-20 mA input and processes it with a 24-bit Sigma-Delta ADC. It shows the scaled result on bright 7-segment LEDs. The device has an accuracy of 0.03% of the span, plus or minus 1 count.

SEPL9300-DPM series is a display and single set point instrument that provides a 0 V or +5 V DC output. The T-DPM-300 series functions as both a meter and a controller. It includes configurable relay outputs rated at 1A at 250 Vac and 4-20 mA retransmission with accuracy better than 0.1% of span. This series also offers a bi-colour display option and flow meter variants with 6-digit and 8-digit displays. Both series use the same 24-bit converter, maintain the same 0.03% accuracy, and require a 24 Vdc power supply.

Yes. Scale and set point are PC-programmable on both series, and the T-DPM-300 series is supplied with dedicated configuration software. The meter is calibrated at assembly against the scale you specify at order, but it can be reconfigured in the field for a new application without factory recalibration. The decimal point is jumper-selectable for quick adjustment on site.

Both series provide an accuracy of 0.03% of span, plus or minus 1 count. The SEPL9300-DPM series has a temperature stability of 0.01% of span per degree C. The T-DPM-300 series has a temperature stability of 0.02% of span per degree C. These figures apply across an operating range of 0 to +70 degrees C. Retransmission accuracy for the T-DPM-300 series is better than 0.1% of span.

Five DIN casing sizes are offered across both series: 24 x 48 mm with a 0.3 inch display, 24 x 72 mm and 24 x 96 mm with a 0.5 inch display, and 48 x 96 mm and 48 x 144 mm with a 0.8 inch display. Maximum digit count is 4 or 4½ depending on the model, and displays are available in red or green.

The 24 x 48 mm and 24 x 72 mm models provide LED only indication in L and H configurations. The 24 x 96 mm, 48 x 96 mm and 48 x 144 mm models provide L, LL, H and HH relay outputs rated 1A at 250 Vac. Output ports are customisable to specific requirements.

Both series use a 24 Vdc power supply and a 4-20 mA input signal. The SEPL9300-DPM series consumes 0.5 W of power, while the T-DPM-300 series consumes 1 W. You make all input, output, and power connections using solderless screw terminals.

These meters are used in the power sector, railways, naval and marine systems, and general manufacturing. Sertel Electronics has provided instrumentation to organizations such as ISRO, HAL, BHEL, NTPC, and DRDO since 1990.