E+H超聲波流量計由超聲波換能器、電子線路及流量顯示和累積系統三部分組成。超聲波發射換能器將電能轉換為超聲波能量，并將其發射到被測流體中，接收器接收到的超聲波信號，經電子線路放大并轉換為代表流量的電信號供給顯示和積算儀表進行顯示和積算。這樣就實現了流量的檢測和顯示。
FMU30是E+H超聲波流量計中的*，它是一款經濟型全能物位測量儀，適用于液體和固體散料的物位測量。
FMU30超聲波流量計應用范圍包括廢水處理廠、過程水儲罐裝載以及儲存罐、緩沖罐的物位監測。FMU30提供成熟的軟件算法，四行純文本顯示提醒和報警信息，確保快速的故障響應，顯示器同時顯示包絡線，現場直接顯示分析結果，保證迅速準確的故障診斷。
FMU30超聲波流量計主要優勢有以下一些：
四行純文本顯示，菜單引導式現場操作，快速簡單地進行儀表調試，7種語言可選
現場包絡線顯示，完成簡單的儀表故障診斷
線性化功能（zui多32點）可將測量值轉換成任意單位到的長度、體積或流量
非接觸測量，zui大限度地減少維護服務
螺紋G1?或1?NPT以上均可安裝
內置溫度傳感器，自動校正受溫度影響的聲速
適用于液體、漿料、淤泥和固體塊料的連續性、非接觸物位測量；系統集成： 4...20mA；zui大測量范圍：1?傳感器：液體：5m(16ft); 固體：2m (6.6ft）；2"傳感器：液體8m，固體：3.5m (11 ft)。
其它常見型號參考：
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E+H 80F50-AD2SAAAABAABA
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E+H 50W80-HA0A1A1AAAW
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E+H 50W25-UAOA1AA0A4AA
E+H FTL50-YJE2AA4G7A
E+H FTC231-K11B4 L=500MM
E+H 53H04-KA0B1AC1AAHAJ
E+H 53H08-KA0B1AC1AAHAJ
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E+H 53H40-A00B1AA1ABAB
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E+H 50H40-UF0B1AA0AAAD
E+H CPM253-PR0150
E+H CPF81-LH11C2
E+H COM223-DX0005
E+H CUM223-TU0005
E+H CUS41-W2
E+H CPK1-150A  15M
E+H CPK1-150A  20M
E+H 50P40-EA2A1AA0BAAA
E+H 50P50-EA2A1AA0BAAA
E+H 50P80-EA2A1AA0BAAA
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E+H FTC51-AG1AA51C4 L1=1000MM L2=100MM
E+H PMP75-5AA1P21D4GAAA
E+H 50W4H-HC0A1AA0AA4AA
E+H FTL51-AGQ2DB4G7A 
E+H FTM30-B1DA1
E+H FTL51-AGR2DB4G5A
E+H FTL51-FGR2BB4G5A L=1100MM
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E+H 65F25-AE2AG1AABAA
E+H FTL51-IAC2BB4E7A  L=300MM
E+H FTL51-IAC2BB4E7A  L=3000MM
E+H FMU232E-AA42
E+H FTM50-4GG2A232AA  L=155MM
E+H FMU231A-AA31
E+H 50W3H-HD0A1AA0A5AA
E+H 65F15-AE2AG1AAAAA
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E+H 10W32-UAGA1AA0A4AA
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E+H 10W1H-UCGA1AA0B4AA
E+H 40E25-AD2SAABAB5AA
E+H 80M80-AS2AAABABBAA
E+H 80M50-AS2AAABABBAA
E+H 50W1F-H50A1A10B7AW
E+H 72W1F-990AA1CAB4AA
E+H 72W80-991AA1CAB4AA
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E+H 80F25-AD2SAAAAAA
E+H 72F1F-SE0AA1DAA4AW
E+H 50W5H-UD0A1AK2AAAH