BEI Sensors H38 User Manual

H38 Incremental Optical Encoder

Mechanical

+output load, 250 mA (max)

Specifications

Voltage/Output: (see note 3)

15V/V: Line Driver, 5–15 VDC in, Vout =

Shaft Diameter: 3/8” nominal

Vin

Shaft Loading: Up to 40 pounds

28V/V: Line Driver, 5–28 VDC in, Vout =

Vin

axial and 20 pounds radial applied

28V/5: Line Driver, 5–28 VDC in, Vout = 5 VDC

1/4” from housing

28V/OC: Open Collector, 5–28 VDC in, OCout

Shaft Runout: 0.0005 T.I.R.

Protection Level: Reverse, overvoltage

Starting Torque at 25° C:

and output short circuit (see note 3)

The H38 is an explosion

4.0 in-oz (max)

Frequency Response: 100 KHz, Up to

proof version­

of the field-

Bearings: Class ABEC 7 standard

1MHz with interpolation option (see note 5)

Shaft Material: 303 stainless steel

proven H25 encoder series.

Output Terminations: see Table 1,

Enclosure: Die cast aluminum, hard

The H38 is UL certified

back page

anodized with dichromate sealed finish.

Termination Type: Compression type,

for NEMA Class 4X

Shaft seals and sealed bearings are stan-

UL recognized. Accepts AWG 14 to 22,

and 6 (outdoor non-

dard to achieve environmental ratings.

stranded wire, strip 1/4”

Bearing Life: 2 X 108 revs (1300 hrs at

Note: Consult factory for other

hazardous locations)

2500 RPM) at rated load; 1 X 1010 revs

electrical options

and Class 4X and 13

(67,000 hrs at 2500 RPM) at 10% of

Environmental

(indoor non-hazardous

rated load

locations). It is available with

Maximum RPM: 10,000 RPM

Specifications

(see Frequency Response, below)

Class 1, Group D, Division 1 or Class

Moment of Inertia:

Enclosure Rating: NEMA 4X & 6

2, Division 1 Group E, F, and G rating for use

4.1 X 10–4 oz-in-sec2

(IP66), outdoor Non-Hazardous

Weight: 64 oz typical (approx 4 lbs)

locations, NEMA 4X & 13 (IP66),

in hazardous locations­

. It features­

a standard shaft seal, double bearing seals, and

Electrical

indoor Non-Hazardous locations

a cast aluminum housing with hard anodized and dichromate sealed finish. The H38

Temperature: Operating, 0º to 70º C;

is suitable for use in petroleum­

service industries, solvent refining operations, spray

Specifications

extended temperature testing available

painting applications, and explosive dust environments.

Code: Incremental or Absolute

(see note 6, back page); 80º C max for

UL and CEN approved units; storage;

Output Format: 2 channels in quadra-

-25º to 90º C.

ture, 1/2 cycle index gated with negative

The H38 Incremental Encoder is available with the following certifications:

Shock: 50 g’s at 11 msec

B channel, or Absolute to 13 bits

Vibration: 5 to 2000 Hz @ 20 g’s

Cycles per Shaft Turn: 1 to 72,000

EN 55011 and EN 61000-6-2

CENELEC EEX ia IIC T4

Humidity: 100% RH

(see table 2, back page). For resolutions

­­zardous Area Rating: Underwriters

U.S. Standards Class I, Group A,B,C & D;

Canadian Standards

above 3,600 see interpolation options

Laboratories listed for use in hazardous

in the 2008 BEI Spec Guide on pages

Class II Group E,F & G

C

Class I, Zone 0, Group IIC

locations; Class I, Group C & D, Class II,

36 and 37); Absolute to 8192 counts

The Mine Safety and Health Administration (MSHA) is an organization

Groups E, F & G. NEC Class 2 circuits

per turn

only.

that operates­

in the United States and enforces compliance with safety

Supply Voltage: 5 to 28 VDC available

(All notes and tables referred to in the text can be

and health standards in the Nation’s mines. Consult factory for MSHA rated product.

Current Requirements: 100 mA typical

found on the back page.)

H38 Explosion Proof Ordering Options for assistance call 800-350-2727

Use this diagram, working from left to right to construct your model number (example:H38D-2000-ABZC-28V/V-SC-CEN).

All notes and tables referred to can be found on the back of this page.

H38

				CYCLES PER TURN:
	TYPE:
				Enter Cycles,
	H = Heavy Duty
				See Table 2
	38 = 3.75” Square
			HOUSING

CONFIGURATION:

D = Standard,

(see dimensions, back page)

CERTIFICATION:

No. of Channels:

Voltage/output:

UL = Class I Group D Environments

A = Single Channel

15V/V = 5–15 Vin/out

CEN = UL Class I & II, Cenelec

AB = Dual Quad. Ch.

28V/V = 5–28Vin/out

IIB Environments

ABZ = Dual with Index

28V/5 = 5–28Vin/5Vout

MSHA = Mine Safety and Health

SPECIal

AZ = Single with Index

28V/OC = 5–28Vin/OCout

Administration Certified

features:

See note 1

See note 3

S = Special

COMPLEMENTS:

OUTPUT TERMINATION:

C = Complementary Outputs,

features specified

SC = Side Conduit, 1/2–14 NPSF

Blank = None

on purchase order

(dryseal) straight pipe threads

See note 2

(consult factory)

See note 4

Tel: [phone] | Fax: [phone] Hollister Ave., Goleta, CA 93117-2807 | www.beisensors.com

Specification No. 02051-001 Rev.10-13