TECPEL Material And Liquid Testing Dissolve Oxygen Meter PM-731

Write a Review
500.00 Grams
Minimum Purchase:
1 unit
Calculated at Checkout
  • PM-731 Differential Manomete (PM-731)
  • TECPEL Material And Liquid Testing Dissolve Oxygen Meter PM-731


Dual Input Differential Manometer  PM-731


Most robust differential pressure meter.

4 switchable units: InWC, mmWC, mbar, psi.

Rubber-boot protection for tough applications.

Dual Display and Dual input.

Main Display: P1.

Second Display: P1-P2, P2.


Accuracy: Stated accuracy at 23°C±5°C,

Operating environment: 0°C to 50°C, (32°F to 122°F)


Compatible Media: Dry, non-corrosive gases.

Battery Life: 200 hours with low battery indication on


Units of Measure: InWC, mmWC, mbar, psi.

Pressure Ports: tube connectors for 8mm I.D. flexible


Battery: 1.5V x 4pcs AAA size.

Dimensions: 171mm(H) x 83mm(W) x 40mm(D).

Weight: approx. 230g including batteries.

Measurement range:

InWC: 0.00 to ± 60.00

mmWC: 0.0 to ± 1500.0

mbar: 0.00 to ± 150.00

psi: 0.0000 to ± 2.0000

Accuracy: ±1.5% FS

Can this meter be used for butane gas?
The sensor used in our differential manometer is for air pressure use.
It should not apply the gases that have corrosive property.
The butane gas is flammable and liquid type. Which I think that might
influence the sensor


As the accuracy of PM-731 is +/- 1.5% FS and full scale of mmWc is
1500mm => 1.5% = +/-22.5mmWc or +/- 1.5% FS of reading ex. if reading is
5mmWc, accuracy is 5 x 1.5% = 0.075mm.

Refers to the full scale measurement range multiplied by the maximum error
value ratio.
That is,  error value of the range scale.
For example:

InWC: -60.00 ~ 60.00 error value is 60 X 1.5% = 0.9, so the error is 0.9 InWC
range full of reading,
such as mmWC -1500 ~ 1500 is 1500 X 1.5% = 22.5, error is +/- 22.5 full
range of values !!

When the customer's absolue measurement value  is 100 mmWC, then the
error range is in the acceptance of 77.5 ~ 122.5

In other words, the more a small equivalent measured values​​, the error
ratio is larger!

Certificate:  CE

View AllClose

Warranty Information

One-Year Warranty
View AllClose