




Dwyer Instruments APM-240 | Analog panel meter | 12-24 VDC | 4 relays | No transmitter
Flow/rate totalizers for analog or pulse inputs are provided by the Model APM-240 Dual Line Configurable Panel Meter and the Series PPM Dual Line Configurable Panel Meter. The most useful feature of these items is their dual line display which allows rate and total to be presented at the same time. It is also possible to program a grand total that is not reset. The meter's total can be reset via the front panel or by attaching a remote switch to the F4 connection at the back. The Series APM supplies the 24 VDC needed to power the flowmeter and receives either a 4–20 mA or 0–10 V input signal. The APM also has configurable exponents for open channel flow and square root extraction for DP flow.

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- Specifications
- Features
- Downloads
Accuracy | +/-0.03% of calibrated span +/-1 count, square root & programmable exponent accuracy range: 10-100% of calibrated span |
Approvals | CE, RoHS, cUL, UL |
Connection | Electrical: Removable screw terminal blocks accept 12 to 22 AWG wire, RJ45 for external relays, digital I/O, and serial communication adapters |
Decimal Points | Five positions, user selectable |
Display | Dual-line 6-digit display, 0.60 in and 0.46 in |
Electrical SPDT Switch Ratings | 2 or 4 SPDT (Form C) internal and/or 4 SPST (Form A) external rated 3A @ 30 VDC and 125/250 VAC resistive load 1/14 HP @ 125/250 VAC for inductive loads. |
Enclosure Rating | NEMA 4X, IP65 front |
Input Impedance | 50 to 100 ¢ž¦ |
Input | 0 to 20 mA, 4 to 20 mA, 0 to 5V, or +/-10V inputs A 85-265 VAC or 12/24 VDC |
Manufacturer | Dwyer Instruments |
Maximum operating temperature | Operating: -40 to 149°F (-40 to 65°C); Storage: -40 to 185°F (-40 to 85°C) |
Output Signal | 4 to 20 mA |
POWER CONSUMPTION | 85 to 265 VAC models: 200 mA @ 24 VDC 12 to 24 VDC models: 100 mA @ 24 VDC Second supply with output 2 models: 40 mA @ 24 VDC |
Power | 85 to 265 VAC 50/60 Hz, 90 to 265 VDC, 20 W max or 12 to 24 VDC +/-10%, 15 W max |
Software | Programming: Free, USB based. Resident on meter, nothing to download |
Time Delay | 0 to 999.9 sec, on & off relay time delays; programmable and independent for each relay. |
Type | Analog Panel Meter |
Weight (for shipping) | 9.5 oz (269 g) |
- Password protection with three tiers.
- Calculus for flow and circular horizontal tanks.
- Configurable exponent, square root, or 32-point linearization.
- Control of many pump alternators.
- Rate expressed in terms of units per minute, hour, day, or second.
- Total, grand total, or grand total that cannot be reset.
- Options for isolated 4–20 mA outputs and two or four relays.
- Extension modules provide digital I/O and an external 4-relay.
- Serial connection possibilities include RS-232, RS-422, and RS-485.
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