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Diaphragm Seal Assembly Pressure Gauge

● This instrument has a diaphragm that, under the process fluid pressure, acts directly on the movement.
● This type of instrument can detect the pressure of highly viscous or crystallizable or solidifiable fluids.

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Description

Packing & Delivery:

Packing: one unit per box.

Packing type: polyester bag+ paper box, carton, pallet.

Carton weight: 20-25kg

Lead time: 7-30 days

Port: Ningbo or Shanghai

Warranty: 1 year

Product Descriptions:

Sealing liquid choice for reliability and safety, the suitable liquid is chosen according to purposes.

Sealing Liquid	Temperature Range	Specific Weight g/cm3	volume coefficient1/ºC	Use
Heavy viscous	-10~200ºC	1.07	0.95×10-3	high temperature
low viscous silicone	-30~100ºC	0.94	1.08×10-3	general use
glycerin solution	-5~100ºC	1.27	0.61×10-3	food use

Diaphragm material

corrosion medium	Diaphragm material
Tin bronze (QSn6.5-0.4)	SUS316	tantalum (Ta)	monel (Ni70Cu30)	Hartz alloy (HC)	teflon(F4)
vitriol (H2SO4)	√	△	O	√	√	√
nitric acid (HNO3)	×	√	O	×	√	√
muriatic acid (HCL)	△	×	O	×	√	√
phosphoric acid (H3PO4)	√	√	O	√	√	√
Acetic acid(CH3COOH)	√	√	O	√	O	√
Caustic soda (NaOH)	△	O	△	O	O	√
Soda ash (Na2CO3)	O	O	O	O	√	√
Baking soda (NaHCO3)	√	O	O	O	O	√
Chlorine(CL2)	dry:√ wet:×	dry:√ wet:×	O	dry:√ wet:×	√	√
Oil and gas(Br2)	dry:△ wet:×	dry:× wet:△	O	dry:O wet:×	O	√
Ammonia(NH3)	×	√	×	×	O	√
Sea(30%NaCL)	√	√	O	O	O	√
Instruction: O-best △-use with condition √-ok X-no use