IFG de Wit BV - Test and Measuring Equipment for Pressure and Temperature

IFG de Wit BV is a quality and service oriented manufacturer of pressure and temperature tests and measuring equipment for all applications.

Since the first De Wit instruments were produced in 1916, our scope of manufacture has increased to include pressure gauges, test gauges, chemical seals, gas actuated thermometers, chart recorders, dead weight testers, mud gauges and pressure test units. In addition, we offer a comprehensive range of pressure transmitters, temperature sensors, digital indicators and related electronic products.

We are small enough to allow a rapid response to customer's special requirements (customised dials, special executions, etc.) whilst large enough to deliver on a timely basis.

Chart recorders

Our 316 SS case mechanical chart recorders have been designed to give a reliable and continued, long-term performance with dependable accuracy, primarily for use in the (offshore) oil and gas industry.

• Portable version or yoke mounting (2in pipe) available
• Single, two and three pen pressure and temperature recording
• Available with 9in circular charts (model 4888SS) or 10-12in circular charts (model 4870SS)
• Recording with disposable feltpens which can be replaced without mess
• Mechanical, battery operated and electric chart drive options
• Window laminated safety glass, scratch proof, 3mm uniform thickness
• Intrinsically safe version available
• Easy installation and maintenance requirement

We also offer a smaller instrument with a light metal panel mounted case using 163mm (6in) circular charts. This instrument is very popular with OEM customers.

Dead weight testers

The operation of dead weight testers is based on the principle of balancing known weights against the force produced by an unknown pressure action on a hydraulic piston of known area. When these forces reach equilibrium and balance the unknown pressure equals the total of the weights and piston.

De Wit dead weight testers incorporate a built-in pump for generating pressure and can be used for checking spring gauges, calibrating bourdon gauges, recorders, transmitters or other instruments, pressure testing small vessels, and measuring gas pressure with high accuracy.

• Brass weights (optional stainless steel weights)
• Measuring units psi, bar, kPa or kg/cm2
• Supplied with metal carrying case(s)

Portable version with an accuracy of +/- 0.1% of rated pressure: pressure ranges from 500psi up to and including 15,000psi.

Laboratory version with an accuracy of +/- 0.05% (optional +/- 0.03%) of rated pressure: pressure ranges from 500psi up to and including 20,000 psi, electric motor drive 220V (optional 110V).

High pressure laboratory dead weight tester with an accuracy of +/- 0.1% for very high pressures: 25,000psi, 35,000psi and 40,000psi.

Mud gauges

The De Wit stainless-steel mud gauge is an own-designed instrument for accurate indication when cementing, fracturing, acidizing or gravel packing. The case is made of a heavy rugged 316 SS construction, designed with a safety factory in excess of normal requirements. The entire bottom is also made of 316 SS.

A 2in connection allows direct mounting to any 2in NPT fitting on pump or well head:

• For pressures up to 15,000psi (or metric equivalents)
• Heavy duty all 316 SS execution for rugged circumstances
• Big true view pointer ? no guesswork
• Large, fully visible dial - easier to read than fixed pointer gauges
• Affordable, cost-effective solution for monitoring mud pressure

Stainless-steel chart recorder with helical elements

De Wit is pleased to announce it has a new 12in chart recorder model P-12 (for pressure) / T-12 (for temperature). The new De Wit model has many of the same features as the existing 12in charts recorder model 4870SS shown above (316 SS case material, various mounting styles, clock options, etc), but there is one important feature: the pressure measuring system includes a 316 SS helical type precision-wound element.

As with the De Wit model 4870SS, this new model can be calibrated to accommodate existing circular 12in charts of, for example, Bristol or ITT Barton/Cameron.

• Outline dimensions 336mm × 463mm × 150mm
• Wall mount, panel mount, portable or yoke mount (2in pipe)
• Case material stainless-steel AISI 316, weatherproof
• Pressure element made by De Wit; 316 SS helical type precision-wound element
• Recording with disposable feltpen on 12in recorder chart
• Window laminated safety glass, scratch proof – special window brackets
• For pressure, P-12 series – minimum range of 0-500psi, maximum range of 0-30,000psi
• For temperature, T-12 series – minimum range of -170°C, maximum range of 600°C; minimum temperature span of 60°C
• Single, two, three and four pen recording options