Small Size – Engineered Plastics

Ordering is Easy! See Page C-5.
Easy online ordering too!

XM/XT-300 Engineered Plastics Series
Brings Continuous Output to Shallow TanksYour most complete line of small, polysulfone
liquid level sensors...all from Gems Sensors.
 All-Plastic Wetted Parts
 4mm Resolution
 Indicating Length to 14˝ (356 mm)

LEVEL SENSORS – CONTINUOUS

Designed for the needs of the OEM, XM/XT-300 Series transmitters are
the ideal level sensor for shallow tanks and reservoirs. Compact andversatile, these plastic level sensors offer a broad choice of mountings
and float materials. The following pages illustrate the various design
parameters available to configure the versatile XM/XT-300 Series Sensors.
1. Mounting Types
Each mounting type can be configured with stem lengths (LO) and float materials
indicated in this bulletin.
NPT Threads

Straight Threads

Type 21
1/8˝ NPT
0.49(12.3)

Type 221˝ NPT

1/8˝ NPT
0.14(4)
LO

Type 31
3/8˝ – 24
0.25(6.4)

1.38(35) HEX

0.49(12.3)

3/8˝ - 24
STRAIGHT
THREAD

1.07(27)0.50(13) HEX1˝ NPT

0.50(13) HEX

Type 32
1-5/16˝ – 12LO

0.25(13.2)

BUNA “N”
O-RINGLO

0.49(12.5)

0.63(16) HEX

G1/4˝(1/4˝-19 BSP)

0.20(5)LO

1.00(25)
LO

Compression Types

Type 42G 1˝ (1˝ – 11 BSP)

Type 51
M12 x 1.5 Straight Thread

PG13.5 THD.

0.240
(6.1)

1.63(41) HEX

0.63(16)G1˝ (1˝ -11BSP)

1.33(34)

1-5/16˝ - 12
STRAIGHT
THREAD

LO

Metric Threads
Type 41
G 1/4˝ (1/4˝ – 19 BSP)

M12 x 1.5
STRAIGHT
THREAD
0.20(5)0.47(11.9)

LO

0.63(16) HEX

LO

0.437 (11.1)
FLATS
5/8˝-11THREAD(2) GASKET(BUNA)(2) WASHER(NYLON)

1.50(38) HEX

0.59(15)0.20(5)

Type 33
5/8˝ – 11

Type 11
No Mounting

Type 711
5/8˝ – 11
0.437 (11.1) FLATSJAM NUT
5/8˝-11 THREAD(NYLON)

1.33(34) 1.00(25)

WASHER(NYLON)LO

COMPRESSIONGASKET(HNBR, BLACK)LO

Flange Mountings2
Type 612˝ O.D. Flange

Type 63
Pop Flange
POP-IN
FLANGE

0.156/4 (4) HOLES EQUALLY SPACED
AS SHOWN ON A 1.50˝/38 B.C.

0.13(3)0.25(6)0.19(4.8)

0.50(13)
2(51)

Stem, Mounting
and Collar Material

BUNA “N”
GASKETLOLO

MOUNT IN 1.31˝ - 1.32˝ OPENING

Polysulfone

Max Length (L0)20 inches (508 mm), Tolerance of L0 = ±1/16˝ (1.6 mm)

Mounting Position

Vertical ±30° Inclination

Notes:
1. Type 71 mounting to be used with 3/4˝ diameter float only.
2. Not recommended for pressure applications.

C-3

0.58
(15)

Visit www.GemsSensors.com for most current information.

Dimensions expressed as:inches(millimeters)

XM/XT-300 / p1of3 / 07-JULY-21

FLOAT TYPE

2. Electrical Connections
Type 2Cable

Compatible
Mounting Type(s)AllProtectionRating

IP64

Extended Leads#22 AWG PVC
Wire, 24˝(610mm) Min.

LEVEL SENSORS – CONTINUOUS

Type 1
Leadwire#22 AWG PVC
Jacketed Cable,
24˝ (610mm) Min.

3. Float Types
Polypropylene

Float
Material

Buna N

15/16(23.8)

Float
Dimensions
1(25.4)

Part Number

245900Float Material
Suitable for…
OperatingTemperature1

Polysulfone

Oil, Fuels
Water: to 180°F (80°C)
Oil: -40°F to +221°F(-40°C to +105°C)

1.06(27.0)
1(25.4)

39005

Hollow –20% Glass Filled

Solid Foamed

1(25.4)1.1(28)
3/4(19)231500PVDF

1(25.4)

1(25.4)

1194551(25.4)

1(25.4)

1(25.4)259125174515
Broad Chemical Use

Water-based Liquids

Broad Chemical Use

Low Specific Gravity
Liquids-40°F to +221°F(-40°C to +105°C)-40°F to +212°F(-40°C to +100°C)-40°F to +221°F(-40°C to +105°C)-40°F to +250°F(-40°C to +121°C)

Pressure,psi (bar) Max.2

250 (17)50 (3.5)

Atmospheric250 (17)50 (3.5)

50 (3.5)

Min. MediaSpecific Gravity

0.45

0.75

0.95

0.90

0.65

0.86

Notes:
1. Operating temperature range based on float ratings.
2. When used with mounting Type 21, 32 or 22 only; Mounting Type 61, and 63 are not recommended forpressure applications. Pressures are derated with increasing temperature above 70°F

Dimensions expressed as:

inches(millimeters)

Also Available
XM/XT-350 Combination Siphon and Level Transmitter
Contact Gems for more details. 800-378-1600
XM/XT-300 / p2of3 / 11-MAY-20

Visit www.GemsSensors.com for most current information.

C-4

Float Type Transmitters – Engineered Plastics

 Product Check List
This is aRequest for a Quote
Order P.O.________

Quantity Needed _____________

Photocopy This Form
Use one form for each producttype you are selecting.

Date Required ____/____/_____
Shipping Method:_____________
Partials Accepted:

This form may also be completed online at
gemssensors.com for RFQ.

YesNo

Name ___________________________________________
Company _________________________________________
Street ___________________________________________
City________________________ State_____ Zip__________
Phone ( _____ ) ___________________________________Fax ( _____ ) ______________________________________

XM/XT-300 Engineered Plastics Custom Length,
Float Type Level Transmitter Check List
Operational Parameters
This information is essential to the accurate and proper operation ofyour GEMS configurable sensor. Please complete fully and accurately
before ordering.
1. Liquid Media: __________________________________________
2. Pressure: Minimum ___________
3. Temperature: Minimum _______
4. Specific Gravity: Minimum ______

psigbar°F°
C

Maximum __________

5. Viscosity: __________________ SSU
6. Tank Material: _________________________________________

Maximum __________
Maximum __________

Tank Depth: ___________________________________________
7. Unit is Mounted In:

T – Top Mounted

B – Bottom Mounted

Product Parameters
4. Dimensions:

1. Mounting Type (select one):11 – No Mounting

21 – 1/8˝ NPT

22 – 1˝ NPT

31 – 3/8˝-24 Straight Thread

32 – 1-5/16˝-12

41 – G1/4˝ (1/4˝-19BSP)

42 – G1˝ (1˝-11BSP)

51 – M12 x 1.5 Straight Thread

61 – 2˝ O.D. Flange

33 – 5/8˝-11

63 – Pop Flange

71 – 5/8˝-11 with 3/4˝ floats only

C Dim. Value per Output Type(Inches)
Mounting Proportional

C

INDICATINGLENGTHLENGTHOVERALL

2. Electrical Connections:* Type

C: Minimum distance from bottom ofmounting to upper float stop.

Description

Compatible
Mounting Types

1

Lead Wires, 24˝ to 26˝ (610mm, Min.)All

2

Cable, 24˝ to 26˝ (610mm, Min.)

All
Note: For Proportional
values of “0” no upper grip
ring is installed. Float stops
at bottom of mount.

* Select one

3. Float Type (select one):
Buna-N – P/N 245900
Polysulfone – P/N 39005
Solid Foamed Polypropylene – P/N 119455
Solid Foamed Polypropylene – P/N 231500
Hollow Polypropylene – P/N 259125
PVDF – P/N 174515

1121223132334142516163
71

0.500000000000

Volt

Current

1.5
0.75
0.19
0.63
0.63
0.19
0.81
0.63
0.81
1.25
0.63
0.19

2.25
1.5
0.94
1.38
1.38
0.94
1.56
1.38
1.56
21.38
0.94

Provide values for both items and check the box next to themost critical value.
Indicating Length _________________ Inches
Length Overall _________________Inches

MillimetersMillimeters

5. Output:

Please contact GEMS Sensors Inc. for any configuration or special
requirements not covered on this form. 800-378-1600

XM-300		Proportional Voltage		Resistive (Quantity Dependent - Contact Factory)
Planned Input Voltage _________
XT-3002-Wire, Loop Powered 4-20mA Output (Insert Mounted)
3-Wire, 0-5 VDC (Insert Mounted)
3-Wire, 0-10 VDC (Insert Mounted)

C-5

Visit www.GemsSensors.com for most current information.

XM/XT-300 / p3of3 / 07-JULY-21