More Compact and Flexible
Detecting System with Reed Switches

SPT7200N Series
Magnetic Float Type Level Gauge

OUTLINE
SPT7200N series is a magnet float type level gauge by which
liquid level and temperature in tank can be measured.
Liquid level can be detected by this gauge, by activating reedswitch completely sealed in guide pipe by the magnet in the float.
The detected resistance is converted into a current signal and beoutputted to a remote indicator and/or data logger.
The temperature sensor up to 2 probes can be assembled, andthe signal can be outputted after converting it into 4-20mA current
signal same as level data.

FEATURES❏ Compact and Cost Saved Design.
Rationally designed to comply with customers’ requirement❏ Output signal can be integrated into same signal.
In case of the current signal, Ballast Tank Level Gauge is used
for Fuel Tank Level Gauge, and the signal system can beintegrated.
❏ A division type level gauge will be also available.
The guide pipe divided into two or more pieces corresponding
to complicated tank structure and an immersed type gauge inliquid tank can also be manufactured.

TG-L1041-E01
2nd edition Sep 2022 K
1st edition Apr 2019 K

SPT7200N Series Magnetic Float Type Level Gauge

MODEL CODE
SP
Function of temperaturemeasurement

7200NSpecifications
Not provided temperature measurement

TProvided temperature measurement
W

Intrinsically Safe TypeNon Intrinsically Safe Type✽

Intrinsically Safe TypeS

Not provided temperature sensor
Quantity of temperature sensor–1R

1 point provided temperature sensor–2R

2 points provided temperature sensor
Standard specification

Temperature of Cargo liquid

HHigh temperature specification (MAX.125°C)✽TZB-051 is used for each barrier of level sensor and temperature sensor.

STANDARD SPECIFICATION● Measurable Object: Liquid Level and Temperature (Density Range: 0.6 to 2 g/cm3)● Measurement System : Magnet Float for Level Thermal Resistance Type, Pt100 RTD● Applicable Pressure: Atmosphere Pressure as Standard
It can be produced sensor so as to correspond to its head pressure for immersed type level sensor.
● Measurable Range: Maximum 30 m for level -25 to 125°C for temperature(The operating temperature differs depending on the number of temperature sensors.)
Table of temperature class and No. of temperature sensors
Process temperature range
Temp. class

Only level

T6/T80°C–25°C to +60°C——T5/T150°C–25°C to +95°C–25°C to +95°C–25°C to +80°C

T4/T200°C–25°C to +125°C–25°C to +125°C–25°C to +85°C● Accuracy● Display System● Construction● Installation● Material

2

1 level & 1 temp.

1 level & 2 temp.

: Level sensor: ±20 mm
Temperature sensor: ±1°C
Remote indicator and R/I converter are also added.
: Analogue or Digital +Analogue for level Digital for temperature(It is available to supply display unit with alarm setting future.): Protection grade, IP66/IP67
Explosion proof Grade : Ex ia IIC T6...T4 Ga
Ex ia IIIC T80°C, T150°C, T200°C Da: Fitting Flange: JIS 5K 150AFF
Guide pipe with support : JIS 5K 250A
: Guide Pipe
: SUS304 (Standard), SUS316, SUS316L
Fitting Flange: SUS304 (Standard), SUS316, SUS316L
Float: SUS316L (Standard)TOKYO KEISO CO., LTD.

TG-L1041-E01

BTG-L1041-E01

21090°
Gn1φ34φ20046min.φ231
n58250

154

ρ=1.0

140
2-12×25

ρ=1.0

Level Alarm

184

154300

φ34

φ130
ρ=1.0

Level Alarm

A: min.250

1878(118)

78

φ138

H: Tank Height(146)

T1: Temp.position

A: min.250(146)

18 (118)

JIS5K150AFF

L: guide pipe length

H: Tank Height

φ34
T2: Temp.position

L: guide pipe length

min.φ147

min.250

141

68

30

T2: Temp.position

GLAND(#20 / #25)
(G3/4 / G1)

225

50
100

22(118)min.250

T1: Temp.position

φ138(283)

n3〜n4(146)

A:min.300

φ138

n0n2

H: Tank Height

L: Guide Pipe Length

T2: Temp.position

T1: Temp.position

φ130153

50

min.250

Level Alarm

SPT7200N Series Magnetic Float Type Level Gauge

CONSTRUCTION AND DIMENSION
Sample of Construction
GLAND(#20 / #25)
(G3/4 / G1)

JIS5K150AFF

min.φ147

GLAND(#20 / #25)
(G3/4 / G1)

JIS5K250AFF

GHigh Temp. Spec.
(Model code “H”)

TOKYO KEISO CO., LTD.

3

SPT7200N Series Magnetic Float Type Level Gauge

SYSTEM CONFIGURATION
Hazardous area

Safety area

Only level
L-MPYCY-4

Barrier
TZB-051

R/I Converter

Indicator
Bar Graph Meter
Analogue/Digitalwith HH, H, L, LL
Alarm Contact

WSP-MS（W）

Level and temp.
L-MPYCY-7
Multi-Monitor
Super DIR-M3200/M8000
RS-232C

Barrier
Alarm

TZB-051

RTD ConverterIndicator
WSP-RTSDigital
With HH, H, L, LL Contact

OTHER INSTRUMENTS FOR MARINE APPLICATION
Besides SPT7200N, the following level gauges and relevant instruments for marine applications are available from Tokyo Keiso.
SP-1200: Flow Magnet Type Level Gauge
SPT3500N: Magnet Float Type Level Gauge with using Contact less Hall IC
PL3700: Pressure Sensor using for Ullage Space in Tank and/or Gas Return Line
MIA-LIDEC: Acoustic Type High level, Overfill Alarm and/or Dryness Sensor
FP-7091S-T: Float Type High and Overfill Alarm
FB-5000, FB-7000 : Float Type Bilge Level Alarm* Specification is subject to change without notice.

Head Office : Shiba Toho Building, 1 – 7 – 24 Shibakoen, Minato-ku, Tokyo 105 – 8558
Tel : +81-3 – 3431 – 1625 (KEY) ; Fax : +81-3 – 3433 – 4922
e-mail : overseas.sales@tokyokeiso.co.jp ; URL : https://www.tokyokeiso.co.jp
4TG-L1041-E01