Panasonic DP-M2Z Digital Pressure Sensor: Comprehensive Guide for Industrial Automation

11 januari 2026

Historical parts record: Photos and notes below belong to this record. Confirm the offered unit’s full model, condition and available test evidence before ordering.

What is the SUNX DP-M2Z?

The DP-M2Z is a SUNX digital differential pressure sensor — the compact cube that watches the small pressures: filter blockage across a cleanroom filter, suction at a vacuum pad, airflow proof in a duct. SUNX is the brand that became Panasonic's sensor division (Panasonic Electric Works bought SUNX in 2003 and the DP-M line lived on under both names), and this build is the plainest of the family: a 0~2 kPa range printed on the case, two barb ports marked H (high) and L (low) on the underside, a red digital display with M1/M2 setpoint positions, and a three-wire lead — brown to 12-24 V DC, blue to 0 V, black as the switched output. The front keys set it in seconds (up, down, MODE, with the O-ADJ quick zero), the unit toggles between mmH₂O and kPa, and the OUT lamp shows the switch state at a glance. Two units, new in their SUNX factory boxes (HBR022), Made in Japan. All 9 photos and 1 video below show these exact sensors.

3 min readContent reviewed 7 October 2026

Part details

DP-M2Z, as printed on the sensor and box
Field	Value
Model	SUNX DP-M2Z (case marking CBHR)
Type	Digital differential pressure sensor, switch output
Range	0 ~ 2 kPa (printed on the case)
Ports	H (high) and L (low) barb fittings, underside
Wiring	3-wire: BROWN = 12 to 24 V DC, BLUE = 0 V, BLACK = OUT (printed on the case)
Display	Digital readout, M1/M2 setpoints, OUT indicator, mmH₂O / kPa units
Controls	Up / Down keys, MODE, O-ADJ quick zero
Origin	Made in Japan (box: SUNX DP-M2Z, HBR022)
Quantity	2 units, new in factory boxes
Shipping weight	0.5 kg per set as recorded

Scroll sideways to see the full table.

Values are read from the case printing, the port markings and the factory boxes in the photo set.

Where a 2 kPa differential switch earns its place

Most industrial pressure work is measured in bars; the DP-M2Z lives three orders of magnitude below that, where the interesting events are gentle: a HEPA filter loading up with dust, a vacuum gripper losing its seal, an aspiration line slowing. Across a filter, a clean element barely registers while a loaded one builds differential steadily — so the DP-M2Z's job is usually as a watchman, its black output wire closing a PLC input when the H-minus-L pressure crosses the M1 setpoint and signalling "change the filter" long before airflow dies. The M2 position carries the second threshold, which lets one sensor run a warning and a trip. Setting is the part SUNX got right: the two arrow keys walk the setpoint while the live reading sits on the display, MODE pages through the options, and the O-ADJ key zeroes the display with both ports open to atmosphere — the whole commissioning routine in under a minute. The wiring printed right on the case (brown 12-24 V, blue 0 V, black out) removes the datasheet hunt at install time, and the H/L barbs on the underside take standard 4/6 mm silicone tube. For panels built around SUNX and early-Panasonic sensor lines, this is the drop-in replacement that keeps the original look and the original wiring colours — two boxed units here, one for the line and one for the shelf.