PULCOM Σ-D

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Features

Wide Measuring Range (maximum diameter difference of 40 mm)

Using an optical scale, replacing LVDT, as a sensor allows continuous measuring to diameters of 40 mm difference, without setup.

High Precision Measuring

The high precision, high rigidity and high durability fulcrum mechanism is used to make a wide range of high precision measurements possible.

Achieves Superior Linearity for Measurements of All Ranges

A fulcrum measurement method is used in a best-fit method of automatic compensation of problematic centering and measurement deviations caused by diameter deformations, to achieve superior linearity.

A/B Phase Digital Transmission

Digital transmission shortens the startup time compared to previous size shift models (1/3 of previous) as well as increasing noise immunity.

Improved Maintainability

Removable connectors provided as standard improve maintainability.

External view

Measuring Heads

E-TD-4162, 4163, 4166, 4168

E-TD-4362, 4363

Relay box

Specifications

Basic specifications
Product name	PULCOM Σ-OD-AR
Model	E-TD-4162	E-TD-4163	E-TD-4166	E-TD-4167
Product code	4419532	4419533	4419536	4419537
Repeatability	≤ 0.2 μm/4 σ	≤ 0.4 μm/4 σ	≤ 0.2 μm/4 σ	≤ 0.4 μm/4 σ
Measuring force	0.6 to 3 N
Linearity	Wide range linearity (reference value) ≤ 0.05% / Full range of diameter differences (when the diameter difference is 25 mm: ≤ 12.5 μm, when the diameter difference is 40 mm: ≤ 20 μm) Narrow range linearity (reference value) ≤ 0.5% (≤ 5 μm) / ±500 μm
Measuring range	25 mm	40 mm	25 mm	40 mm
Pre travel (one side)	≥ 6.5 mm	≥ 10.3 mm	≥ 6.5 mm	≥ 10.3 mm
Measuring diameter	φ 4 to φ 76.5	φ 4 to φ 84	φ 4 to φ 76.5	φ 4 to φ 84
Workpiece profile	Continuous surface
Retract type	Air type (double-acting)
Retract amount (one side)	≥ 7.3 mm	≥ 11.0 mm	≥ 7.3 mm	≥ 11.0 mm
Retract mechanism (retract air source)	0.35 to 0.5 MPa (return action)
Standard finger length	82 mm	152 mm	82 mm	152 mm
Waterproof standard	IP67 compliant (measuring head, relay box)
Cable thickness and length	φ 8 × 2 m
Weight (main unit)	Approx. 1.4 kg
No. of outputs	2
Remarks	A standard finger length of between 82 mm and 152 mm can be supported.

Basic Specifications
Product name	PULCOM Σ-D-ID-AR
Model	E-TD-4182	E-TD-4186
Product code	4419562	4419566
Repeatability	≤ 0.2 μm/4 σ	≤ 0.2 μm/4 σ
Measuring force	0.6 to 3 N
Linearity	Wide range linearity (reference value) ≤ 0.05% / Full range of diameter differences (when the diameter difference is 25 mm: ≤ 12.5 μm, when the diameter difference is 40 mm: ≤ 20 μm) Narrow range linearity (reference value) ≤ 0.5% (≤ 5 μm) / ±500 μm
Measuring range	25 mm	25 mm
Pre travel (one side)	≥ 6.5 mm	≥ 6.5 mm
Measuring diameter	φ 22 to φ 109	φ 22 to φ 109
Workpiece profile	Continuous surface
Retract type	Air type (double-acting)
Retract amount (one side)	≥ 7.3 mm	≥ 7.3 mm
Retract mechanism (retract air source)	0.35 to 0.5 MPa (return action)
Standard finger length	82 mm	82 mm
Waterproof standard	IP67 compliant (measuring head, relay box)
Cable thickness and length	φ 8 × 2 m
No. of outputs	2
Weight (main unit)	Approx. 1.4 kg

Basic specifications
Product name	PULCOM Σ-D-OD-AR (for in-process use)
Model	E-TD-4362	E-TD-4363	E-TD-4366	E-TD-4367
Product code	4310052	4310053	4310056	4310057
Repeatability	≤ 0.4 μm/4 σ
Measuring force	1.4 to 3.2 N
Linearity	Wide range linearity (reference value) ≤ 0.05% / Full range of diameter differences (when the diameter difference is 25 mm: ≤ 12.5 μm, when the diameter difference is 40 mm: ≤ 20 μm) Narrow range linearity (reference value) ≤ 0.5% (≤ 5 μm) / ±500 μm
Measuring range	25 mm	40 mm	25 mm	40 mm
Pre travel (one side)	≥ 6.5 mm	≥ 10.3 mm	≥ 6.5 mm	≥ 10.3 mm
Measuring diameter	φ 4 to φ 76.5	φ 4 to φ 84	φ 4 to φ 76.5	φ 4 to φ 84
Workpiece profile	Continuous surface
Retract type	Air type (double-acting)
Retract amount (one side)	≥ 7.3 mm	≥ 11.0 mm	≥ 7.3 mm	≥ 11.0 mm
Retract mechanism (retract air source)	0.35 to 0.5 MPa (return action)
Standard finger length	82 mm	152 mm	82 mm	152 mm
Waterproof standard	IP67 compliant (measuring head, relay box)
Cable thickness and length	φ 8 × 2 m
Weight (main unit)	Approx. 1.4 kg
No. of outputs	2
Remarks	The standard finger length is of the two types, 82 mm and 152 mm. Between 82 mm and 152 mm can be supported.

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