Type 8312

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1.

General Technical Data

Product properties

Material

Non wetted parts

Housing

Stainless steel 1.4305 (303)

Wetted parts

Process connection

• Ceramic version: stainless steel 1.4305 (303)

• Metallic G or NPT version: stainless steel 1.4571 (316Ti)

• Metallic clamp version: stainless steel 1.4435 (316L)

Measurement element

• Ceramic version: ceramic Al

2O3 (96 %)

• Metallic version: stainless steel 1.4435 (316L)

Seal

• Ceramic version: FPM (FFPM on request)

• Metallic version: none

Dimensions

Detailed information can be found in chapter “3. Dimensions” on page 6.

Surface quality

For clamp connection

Ra < 0.8 µm

Measurement technology

• Ceramic thick film strain gauge

• Metallic thin film strain gauge

Measured variable

Relative pressure (absolute pressure on request)

Measuring range

- 1…5 or 0…0.25; 1; 1.6; 2.5; 4.0; 6.0; 10.0 or 16.0 bar

Detailed information can be found in chapter “6.3. Ordering chart” on page 9.

Compensated ambient temperature

range (T

amb.)

- 20…+ 85 °C (- 4…+ 185 °F)

Monitoring

• Measuring circuit

– Underrange (freely selectable lower limit)

– Overrange (freely selectable upper limit)

• Probe short circuit

• Probe break

Weight

95 g with process connection G ¼"

Performance data

Temperature coefficient (Tc)

In compensated T°

amb. range

Average Tc of zero

• Ceramic version: ≤ 0.02 % / °C typical, ≤ 0.04 % / °C max.

• Metallic version:

– ≤ 0.03 % / °C typical, ≤ 0.05 % / °C max. for measuring ranges ≤ 0.4 bar

– ≤ 0.02 % / °C typical, ≤ 0.04 % / °C max. for measuring ranges > 0.6 bar

Average Tc of measuring span

• Ceramic version: ≤ 0.02 % / °C typical, ≤ 0.04 % / °C max.

• Metallic version: ≤ 0.02 % / °C typical, ≤ 0.04 % / °C max.

Thermal hysteresis

• Ceramic version: ≤ ± 0.4 % of measuring span

• Metallic version:

– ≤ ± 0.5 % of measuring span (in compensated temperature range)

– ≤ ± 1 % of measuring span for range 0…0.25 bar

Zero offset

≤ 0.3 % of measuring span

Cycle time

1 ms

Measuring resolution

12 Bit

Overload limit

3 x measuring span

Burst pressure

4 x measuring span

Detailed information on burst pressure can be found in chapter “6.3. Ordering chart”

on page 9.

Measurement deviation

Related to characteristic curve: ≤ 0.5 % of measuring span (limit point setting)

Hysteresis

• Ceramic version: ≤ 0.2 % of measuring span

• Metallic version: ≤ 0.1 % of measuring span

Repeatability

• Ceramic version: ≤ 0.1 % of measuring span

• Metallic version: ≤ 0.05 % of measuring span